Cita APA (7a ed.)

Ullmann, W. (2010). The growth of papal government in the Middle Ages: A study in the ideological relation of clerical to lay power. American Council of Learned Societies.

Cita Chicago Style (17a ed.)

Ullmann, Walter. The Growth of Papal Government in the Middle Ages: A Study in the Ideological Relation of Clerical to Lay Power. New York: American Council of Learned Societies, 2010.

Cita MLA (9a ed.)

Ullmann, Walter. The Growth of Papal Government in the Middle Ages: A Study in the Ideological Relation of Clerical to Lay Power. American Council of Learned Societies, 2010.